[mod] Boots of Speed bug(?) fix

Edit: deleted the mod after consideration. Especially there was a big where Speed of Boots would give immunity to disease.

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Note: This is perhaps one of the oldest bug in BG series. What Bioware did was that they gave Boots of Speed haste property, thus increasing the speed of the user while making them immune to haste spell. One side effect of this was that NPCs were given illegal +1 attack per round bonus.... But since nobody seemed to complain, and fearing possible backfire should they attempt to correct it (like missile weapon APR bonus... and I have to say they were right about the possible uproar should they attempt to fix it), they decided to leave it as is.

Now Overhaul is attempting to correct this, but this solution leaves one side effect: the movement rate would quadruple should NPC get both Boots of Speed and Haste spell.

My fix attempts to correct the problem by making Boots of Speed user immune to Haste and Slow, but this leaves two problems: 1) Haste spell, while not giving movement rate bonus, should still give NPC one APR bonus, and improved haste x2 APR bonus 2) Perhaps Boots of Speed users would still be subject to Slow spell when save vs. spell failed.

Whichever solution people might have ain't easy. If someone can provide fix so that Boots of Speed 1) gives double movement rate 2) Haste spell doesn't give the user quadruple speed boost 3) but still gives 1 APR bonus or in case of Improved Haste, 2x bonus, it might be ideal.